公开(公告)号：US20170032894A1

公开(公告)日：2017-02-02

申请号：US15220064

申请日：2016-07-26

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Chie KAWAMURA ,  Yoichiro OGATA ,  Tetsuo SHIMURA ,  Minoru RYU ,  Yoshiki IWAZAKI

IPC: H01G4/12 ,  H01G4/248 ,  H01G4/30

CPC classification number: H01G4/1227 ,  H01G4/30

Abstract: A multilayer ceramic capacitor includes a laminate constituted by internal electrode layers of different polarities alternately layered via dielectric layers, wherein the multilayer ceramic capacitor is such that the dielectric layers contain ceramic grains whose primary component is BaTiO3, the ceramic grains contain Mo, Mn, rare earth R, and at least one of V and W, and the average valence number of Mo in the ceramic grains is 4.50 to 5.50. The multilayer ceramic capacitor can offer excellent service life characteristics and sufficiently suppress leak current even when the thickness of the dielectric layer is 0.8 μm or less.

Abstract translation: 多层陶瓷电容器包括由电介质层交替层叠的不同极性的内部电极层构成的层叠体，其中，所述多层陶瓷电容器使得所述电介质层含有主要成分为BaTiO 3的陶瓷晶粒，所述陶瓷粒子含有Mo，Mn，稀有金属 土R，以及V和W中的至少一个，陶瓷晶粒中Mo的平均价数为4.50〜5.50。 即使当电介质层的厚度为0.8μm以下时，多层陶瓷电容器也能够提供优异的使用寿命特性，并充分抑制漏电流。